| 123456789101112131415161718 | 'use strict';var callBind = require('call-bind');var I402 = typeof Intl === 'undefined' ? null : Intl;var DateTimeFormat = I402 && I402.DateTimeFormat;var resolvedOptions = DateTimeFormat && callBind(DateTimeFormat.prototype.resolvedOptions);// https://262.ecma-international.org/15.0/#sec-systemtimezoneidentifiermodule.exports = function SystemTimeZoneIdentifier() {	if (DateTimeFormat && resolvedOptions) {		return resolvedOptions(new DateTimeFormat()).timeZone; // steps 2 - 3	}	return 'UTC'; // step 1};
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